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| | Chromium potassium sulfate dodecahydrate Basic information |
| Product Name: | Chromium potassium sulfate dodecahydrate | | Synonyms: | Chromium (III) Potassium Dodecahydrate;CHROMIUM POTASSIUM SULFATE, REAGENT (ACS)CHROMIUM POTASSIUM SULFATE, REAGENT (ACS)CHROMIUM POTASSIUM SULFATE, REAGENT (ACS)CHROMIUM POTASSIUM SULFATE, REAGENT (ACS);chromicpotassiumsulfatedodecahydrate;chromicpotassiumsulfatedodecahydrate(chromealum);Chromium(III)potassiumsulfate(1:1:2),dodecahydrate;potassiumchromiumalumdodecahydrate;Potassiumchromiumsulfate,doe;Chromium(Ⅲ) potassium sulfate dodecahydrate | | CAS: | 7788-99-0 | | MF: | CrH5KO5S | | MW: | 208.19 | | EINECS: | 616-539-5 | | Product Categories: | | | Mol File: | 7788-99-0.mol |  |
| | Chromium potassium sulfate dodecahydrate Chemical Properties |
| Melting point | 89 °C(lit.) | | density | 1.83 | | bulk density | 800-1000kg/m3 | | storage temp. | Store at +15°C to +25°C. | | solubility | water: soluble(lit.) | | form | Solid | | color | Violet | | PH | 3 (50g/l, H2O, 20℃) | | Odor | Odorless | | Water Solubility | 24 g/100 mL (15 ºC) | | Merck | 14,2229 | | Exposure limits | NIOSH: IDLH 25 mg/m3; TWA 0.5 mg/m3 | | Stability: | Stable. Incompatible with magnesium, aluminium. | | InChI | InChI=1S/Cr.K.H2O4S.H2O.H/c;;1-5(2,3)4;;/h;;(H2,1,2,3,4);1H2; | | InChIKey | WAYJJQPENBTMDM-UHFFFAOYSA-N | | SMILES | S(O)(O)(=O)=O.[Cr].[KH].O | | CAS DataBase Reference | 7788-99-0(CAS DataBase Reference) |
| Hazard Codes | Xi | | Risk Statements | 36/38 | | Safety Statements | 22-24/25-37/39-26 | | WGK Germany | 2 | | RTECS | GB6850000 | | TSCA | Yes | | HS Code | 28332990 | | Storage Class | 11 - Combustible Solids | | Hazard Classifications | Eye Irrit. 2
Skin Irrit. 2 |
| | Chromium potassium sulfate dodecahydrate Usage And Synthesis |
| Chemical Properties | deep violet-red crystals | | Uses | Chromium potassium sulfate dodecahydrate is used in preparation of chromium standard solutions. | | Uses | Chromium potassium sulfate dodecahydrate is used in method for synthesizing metal-organic terephthalate structure MIL-101 (Cr). | | Uses | Chromium(III) potassium sulfate dodecahydrate [KCr(SO4)2.12H2O] has been used for the dissolution of gelatin in various studies.
It may be used as a starting material in the synthesis of quasi-monodisperse spherical core-shell particles of Cr/α-Cr2O3 to be used as solar absorbers. | | General Description | Chromium(III) potassium sulfate dodecahydrate (Potassium chromium(III) sulfate dodecahydrate, Chrome alum) is a violet colored solid. It has been synthesized by reacting sulfur dioxide with potassium dichromate (diisolved in sulfuric acid) at -38°C. It is widely used chemical in dyeing and textile industry. | | reaction suitability | reagent type: catalyst
core: chromium | | Synthesis | After dissolving 98% potassium dichromate and 98% sulfuric acid in the mother liquor of chromium alum according to the theoretical amount, wood chips were added slowly under stirring for reduction. The reaction temperature is controlled at not more than 80C. After the reaction, it is left to crystallize slowly, and after centrifugal separation of the mother liquor, the crystals are washed with a small amount of cold water, and then dried at a low temperature to produce the finished product of chromium potassium sulfate. The reaction formula is as follows: 2K2Cr2O7+8H2SO4+40H2O+3C4KCr(SO4)2-21H2O+3CO2 | | Purification Methods | Crystallise it from hot water (2mL/g) by cooling. |
| | Chromium potassium sulfate dodecahydrate Preparation Products And Raw materials |
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